Aik-tight heater



Patented Nov. 20, 1928.

entre!) STATES SAMUEL lLOAFEA, OF OAKLAND, CALIFORNIA.

Y AIR-TIGHT HEATER.

Application led June 30, 1925 My invention relates to heating stoves designed for the use of solid fuels and particularly to stoves of the so-called airtight type.

An object of the invention is to provide a stove of the class described having a grate defining a portion of the bottom of the hrebox of the stove and an ash-tray removably attached exteriorly of the fire-box` whereby the capacity of the fire-box may be increased without increasing the dimensions of the stove.

Another object of the invention is to provide a stove of the type described having the ash tray thereof arranged to provide an air inlet to the stove.

The invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the .following description of the preferred form of my invention which is illustrated in the drawings accompanying and forming part of the specification. It is to be understood that I do not limit myself to the showing made by the said drawings and descrigtion, as I may adopt variations of the preferred form within the scope of my invention as set forth in the claims.

Referring to said drawings:

Figure 1 is a front view of a heater embodying the features of my invention.

Figure 2 is a side View of the heater.

Figure 3 is an enlarged fragmentary sectional view of the heater, taken on the line 3-3 in Figure 2.

Figure 4 is an enlarged bottom view, partly in section, taken on the lne 4.-e in Figure 1.

In the present embodiment of the invention, and as particularly shown in the drawings, the heater 6 of my invention is formed with side walls 7, a top 8, and a bottom 9, which cooperate to define a fire-box 11 ben tween them in a usual manner. The top 8, it will be noted, is provided with a suitable opening through which fuel is arranged to be inserted, said opening being closed by a cover 12, while the bottom 9 is preferably provided with a longitudinally extending rectangular opening 13 with which a grat-e 14 is arranged to register and below which an ash-tray 16 is arranged to be removably held. l Y

As here shown, the grate and ash-tray are arranged to be held properly positioned by means of a pair of track members 17 fixed Serial No. 10,530.

to the bottom 9 at opposite sides of the openmg 13 in parallel relation, the parallel sides 18 of the ash-tray being formed with inwardly extending` flanges 19 adapted to slidably engage in the guideways 21 provided in the outer sides of the track members 17. Support for the grate is here shown pro vided by means of lugs 22 downwardly and inwardly extended from the members 17 at a plurality of vpoints therealong and on which the grate is arranged to slidably rest, while portions 23 of the members 17 are arranged to closely overlie the grate to prevent the tilting of the grate during removal thereof through the guideway thus defined, it being noted that the structure thus provided prevents the accumulation of ashes in the guideway. The grate is preferably provided with a forwardly extending handle 24 to facilitate the handling thereof, while the rear end ywall 26 of the ashstray is shaped to clear` the track members 17. f In this manner, it will now be noted, a structure has been provided kin which independent manipulation of the tray and grate is permitted without necessitating the removal of the cover, and a maximum sized fire-box is provided. v

Since it is necessary, in a stove of the air-tight type, that the entrance of air to the stove, particularly atits bottom, be controllable and if desired, reducible to a minimum, the front wall 27 of the tray 16 is here shown arranged to extend to the stove bottom 9 and provided with a slot 28 through which the grate may be moved and which the forward portion of the grate is arranged to iill when the grate and tray are operatively disposed in the stove. Closure of the tray at the rear thereof is provided by means of a downwardly extending iiange 29 secured to the bottom 9 and extending across the end of the bottom opening 13 and against which the tray end wall 2G is arranged to abut when the tray is operatively disposed. In this manner it will now be noted, a practically air tight bottom structure has been provided for the stove without sacrifice of any of the advantageous features thereof. Y

Controlled admission of air to the stove in a manner to preferably supply the same to the fuel from below may be effected in any suitable manner. As here shown, a damper 31 of the slide type is provided, the damper being arranged in the upper portion of the front Wall 27 of the tray. In this manner, air may be supplied to the stove at a controllable rate and desirable close regulation of the air supply is provided for. By utilizing the tray for air supplying purposes, it will be noted that any need for pertorating the stove walls or top to provide an air intake passage is avoided, while placing the air intake beneath the stove in an inconspicuous place avoids the need of the expensive finish required by an intake m re conspicuously located.

It will now be noted that the ashes may be delivered Yfrom the grate to the tray by simply reciprocating the saine in its guide- Way, after which the tray may be withdrawn for the removal of the ashes if desired. Cir in case a complete withdrawal of the lire is desired, the grate may be pulled 'forward to allow the ashes and burning fuel to fall into the tray. In either event, it will be noted, the desired manipulation is effected in a simple manner without necessity ot' opening the stove and with a minimum oi effort.

I claim:

l. In a heater, a bottom having an opening` therethrough, a grate removably positioned across said opening entirely externally of the plane of said bottom, an ash-tray removably positioned below said grate, and cooperating track members :fixed to said bottom adjacent said opening provided with guideways in which both said grate and ash-tray are arranged to slidably and independently 'porting said grate and ash-tray in said positions, and means arranged whereby said grate, ash-tray and supporting means. may cooperate to provide a substantially air-tight closure ior said opening.

3. In a heater, a bottom portion having an opening therethrough; a grate removably positioned across said opening externally ot said bottom; an ash-tray removably positioned below said grate; common members lixed to said bottom and independently supporting said grate and ash-tray in said positions to allow their independent movements Jior removal in planes parallel to the plane of said bottom, said grate, ash-tray and supporting means being arranged to cooperate to provide a substantially air-tight closure for said opening; and adjustable air inlet means in said'ash-tray arranged to permit toe 'flow of air t'nerethrough into said heater.

In testimony whereof, I have hereunto set my hand at Gakland, California, this 17th day of June, 1925.

SAMUEL LOAFEA. 

